Polishing-machine.



W. H. MAZB & J. NELSON.

POLISHING MACHINE. APPLICATION FILED DEG. 21.1901.

Patented Dec.29, 1908.

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- W. H. MAZE & J. NELSON.-

POLISHING MACHINE. 4 APPLICATION FILED DEU- 21,1907. 908, 1 1 5.

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w. H. MAZE & J. NELSON.

I POLISHING MACHINE. I APPLIOATION FILED DBO. 21, 1907.

Patented Dec. 29, 1908.

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' #014; An, j ezfon/ W. H. MAZE 6: J. NELSON.

POLISHING MACHINE. APPLIOATION IILED DEO.21,1v907.

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Ill #1 UNITED. STATES PATENT OFFICE.

WALTER H'. MAZE AND JOHN NELSON, OF PERU, ILLINOIS, A SSIGNORS TO AMERICAN NIGKELOID & MANUFACTURING COMPANY, OF PERU, ILLINOIS, A CORPORATION OF ILLINOIS.

POLISHING-MACHIN E. v

Specification of Letters Patent.

Patented Dec. 29, 1908.

Application filed December 21, 1;!07. Serial No. 407,530. 4,.

violently thrown by either polishing roll at a time when it is not gripped by a sheet- Our invention, relates particularly to machines for polishing sheet metal; and our primary ob ect is to provide a machine of slmple construction which is well adapted to the purpose of polishing metal in sheet form and which will serve to completely (polish one surface of each sheet of meta uring the passage thereof through the machine.

It may be preliminarily stated that the invention, according to its preferred embodiment, involves .the use of a pair of buffing or polishing rolls s aced apart a suitable distance and raw) ving in opposite directions, the shafts of said olisl' ing rolls being journaled in stationary ea ings with which the main frame is provided; sheetsupportin roll corresponding with each buffing roll, and a feed roll located adjacent to each sheet-supporting roll; an inr 2r adjustable frame carrying the sheet-supporting rolls and feed rolls and providing f 1r the simultaneous adjustment thereof with relation to the buffing rolls; a pair of rockmembers supported on the inner frame, one sheet-supporting roll and one feed roll beingcarried by each of said rock-members to admit of the intermittent raising and lowering of the same with relation to the buffing rolls; a air of cams loosely mounted upon a rotary sliaft and adapted to be intermittently connected to and rotated therewith through the medium of clutches splined on said shaft; a rotary clutch-actuating shaft equipped with arms for throwing said clutches into operative engagement with said cams at suitable intervals, and a pair of automatically actuated shields connected with said rock-members, one of said shields serving to protect the entering portion of the sheet metal while it is being passed beneath the first bufiing roll and into the grip of the first sheet-supporting roll and the feed roll co-acting therewith, and the other of said shields serving to protect the last portion of the sheet from the second polishmg roll as the sheet leaves the machine,

thereby to prevent the sheet from being "supplorting roll and companion feed roll.

e invention is illustrated in its referred embodiment in the accompanying rawings, in which:

Figure 1 represents a front elevational view of our improved ol ishing machine, a front cross-member of t 1e main frame being shown in dotted lines; Fig. 2, a side elevational view of the same Fi 3, a broken section taken as indicated at line 3 of Fig. 1 and showing one of the guides between the main frame and the inner frame; Fi 4, a longitudinal vertical sectional view ta on as tudinal vertical sectional view taken as indicated at line 5 of Fig. 1; Fig. 6, a broken horizontal sectional view taken as indicated at line 6 of Fig. 1 and showing the relation of the cam-shaft, cams, clutches and the rotary shaft e uipped with arms serving to actuate said 0 utches; Fig. 7, a side elevational view, on a reduced scale, of the inner adjustable frame; and Fig. 8, a sectional vview taken as indicated at line 8 of Fig. 1

and showing the arms of said rock-members in relation to stops therefor which are carried by a central standard which affords bearings for the central portion of the cam shaft and the shaft which carries the clutch-actuating arms.

In the construction shown, A represents a main frame which is adjustable longitudinally on a base or shoe, A A, an inner frame which is vertically adjustable with relation to the main frame; A standards rising from the. inner frame and equipped at their upper ends with-rigidly, connected forwardly extending bracket arms A and with rigidly connected rearwardly extending bracket arms A ;B, B apair of polishing rolls journaled in bearings at the upper front and upper rear ortions of the main frame, respectively; C, a pair of rock-members formed rigidlywith shafts 0, 0 respectively, which are journaled in bearings at the u per portion of the adjustable inner frame C G a sheet-supporting drum and co-acting feedroll, respectively, journaled in the rock member C and located adjacent to the polishing roll B; C G a sheet-supporting roll and co acting feed-roll, respectively, journaled in the rock-member C and located adjacent to the polishing roll B C, a shield 70 indicated at line 4 of 'Fig. 1; Fig. 5, a longi- I for the front polishing roll whose arms are pivotally connected with the arms A; O", a shield for the rear polishing roll whose arms are pivotally connected with the bracket arms A C (3, links connecting the rockmembers 0, C with said shields, whereby said shields will be automatically actuated when the rock-members are turned in their bearings; D, a cam shaft journaled in the inner adjustable frame A and equipped with a pulley D through which continuous rotary motion is imparted to the cam shaft; D D a pair of cams mounted loosely on the shaft D at its central portion and engaging, res ectively, the cam-arms of the rock-mem .ers C and C; D, D, a pair of clutch members splined on the shaft D and adapted to connect said cams intermittently with the shaft D to rotate therewith; D, D, a pair of] clutch-shifting levers, or yokes, mounted on 1 standards D carried by the bottom member of the inner frame A E, a clutch-shifting I shaft journaled in bearings in the inner frame A and equipped with clutch-shifting arms E, E adapted to engage the clutchshifting levers D, D, respectively; F (figs.

1 and 4), a gear secured on the shaft D inside of one of the uprights of the inner frame A; B, a gear meshing with the gear Fand journaled upon a stud fcarried by said upright; l W, a pair of gears meshing with the gear F and journaled, respectively, on the shafts c and c; F and fixed on the shaft of the feed-roll C F a gear meshing with the gear 1 and fixed on the shaft of the feed-roll C the gear-train thus described serving to communicate motion from the shaft D to the feed-rolls C C whereby said feed rolls are rotated in the a gear meshing with the gear F same direction; 1 (L igs. 1 and 2), a pinion secured on the shaft D outside of the adjacent upright of the inner frame A and meshing with a gear 1 journaled on a stud F projecting outwardly from the adjacent upright of the inner frame A F", a gear formed integrally with or secured to rotate with the gear F; F a gear meshing with the gear 1 and serving to communicate motion to the gear B fixed on the shaft E; F; a bracket carrying the gear F said bracket having one arm journaled on the shaft E and another arm ad'ustably connected with the bracket F carried by the frame A, the train of gears last described providing for the communication of motion from the shaft D to the shaft E; G, mechanism for ad'usting the inner frame A with relation to t e outer frame A; H, a table or guide over which the sheets of eos,11e

on its base. or shoe by means of screws (1, this adjustment bein useful in regulating the tension of the beltmg from the line shaft. The main frame preferably comprises side members a connected at their front and rear portions by cross-members a and connected at their bottoms by a cross-member a. The cross member a is of channel form and serves to receive and support the mechanism G which serves to adjust the inner frame A The main frame is provided at its front end with brackets a supporting bearings a in which is journaled a shaft a which is equipped at one end with a pulley (U. The main frame also su orts bearings a for the shafts b of the polls iin rolls, said shafts I) being equip ed with with the pu lley a, said pulleys receiving a belt b so arranged as to impart motion in opposite directionsto the polishing rolls. lhe inner frame A comprises a horizontal member a located just above the crossmember a of the main frame; end standards a rising from the end )ortions of the horizontal member a and forming therewith a U-sha ed inner frame; the standards A supported on the uprights a and a central standard a rising from the llOIiZOIl'titl'DlClllher a and affording bearings for the shafts D and E and affording, also, stops at, a for the cam-arms of the rock-members C and (l, res ectively. As shown in 1 lg. 7, the standar s or uprights a are provided with bearings a, a for the shafts c and c, with bearings a) for the shaft D, and with bearings a for the shaft E. ,One of said standards is also provided with a bearing a for the stud F The outer surfaces of the upright members (1 of the inner frame A are provided with vertically disposed, centrally located flanges a which, as shown in Ilg. 3, are

; inner frame A metal are fed into the machine; H, a curved or dished guide carried by the inner frame and 'located between the front and rear sheet-supporting rolls; and H a table or guide over which the sheets pass in leaving the machine.

The. frame A adjustable longitudinally located between guide-blocks a, with which the inner surfaces of the side frame-members a) of the main frame are e nipped at points adjacent to the upper and lower ends of the As appears from Figs. 4 and 7, the side members, or uprights, a of the inner frame A are equipped on their outer surfaces at their upper ends with flanges or short brackets a to which the -flanged lower ends of the standards A are metal.

The rock-member C comprises the shaft 0 whose ends are journaled in the uprights a of the inner frame-member A; members 0 rigidly secured on said rock-shaft inside of thicknesses of metal. prises a curved sheet-metal member, or

adjustable bearings c for the ends of the shaft of the sheet-supporting roll or 'drum G a cam arm 0 having a roller 0 adapted to engage the cam D and an arm 0 depending from and rigid with the shaft 0. .The rockmember C is similarly constructed. but turned in the reverse direction and the parts are similarly lettered. The" lower ends of the arms 0 are provided with perforations which receive a rod 0 upon which is a coilspring 0 which is confined between the end of one of said arms and'nuts 0 which are threaded on said rod and one of which bears against the otherof said arms. This, the spring 0 serves to yieldingly hold said arms 0 separated and tends to maintain the rockmembers 0-, in such position that the sheetsupporting rolls C C are elevated so as to su port the sheet metal in contact with the po ishing rolls. The adjustable bearings c are movable toward and away from the adjacent feed rolls, thus enabling the sheetsupporting rolls to be adjusted with relation to the feed rolls to accommodate different The shield'C comsector, 0 adapted to encircle a portion of the circumference of the polishing roll B, and arms 0. connecting the ends of the member o with pivots carried by the front ends of the bracket arms A.

of the shield C is the same, and the parts are similarly lettered. The link C comprises two adjustably connected parts 0, 6 the upper end of the link being connected by a pivot 0 with the adjacent arm a", near the The arrangement at the rear shield is the same, and the parts are similarly lettered.

As has been indicated, the shaftDis j ournaled in the bearings a. with which the end members of the'inner frame A are provided. Motion is imparted to said shaft through the pulley D by means of a belt (1. The cams D 1) are located on opposite sides of the central standard a", and the non-ad'acent sides of said cams are equipped with c utch members having slanting teeth. The clutchmembers D D are e .uip ed withcorrespondingly slanting teeth a apted to enga e said first mentioned teeth. The clutc shifting levers, or yokes,,D, D are connected with the standards D? by vertical pivots (1 As shown in Fig. 6, coil-s rings d are confined between the cams D 3 and the clutch-members D D these springs serving to throw the clutch-members outof engagement with the cams. The free end of The construction eachclutch-shifti1ig lever is equipped with a lateral cam projection (1 adapted to be engaged by a cam d on the corresponding one of the arms E, E The clutch-shifting arms E, E are angularly adjustable on the shaft E, as indicated, thus providing for timing of the operations.

The bracket F which carries the gearwheel F is connected by means of a bolt f, with a slot f which is struck in the bracket F on a radiusfrom the shaft E', thus enabling the bracket F to be swung on the shaft E as a pivot in adjusting the bracket. This enables gears of a different size to be substituted for varying the speed ratio and timingthe operation of the shaft E, according to the,

lengt of the sheets of metal which are to be polished.

The mechanism G for adjusting the inner frame A verticallycomprises screws g having stems supported in bearings g with which the cross-member a of the main frame is provided; nuts g received by sockets g Wit which the cross-member a of the inner frame A is provided; sprocket wheels g secured to the stems of the screws g; and a sprocket chain 9 connecting said s rocket wheels. Thus, when the sprocket 0 sin 9 is moved the screws will be simultaneously turned to raise or lower the inner frame, according to the direction of the movement of the screws. 'It will be noted that in an adjustment of the inner frame the sheet-supporting rolls, the feed-rolls co-acting therewith, the driving mechanism for the feedrolls, and the means for automatically raising and lowering the shields, willbe simultaneously adjusted.

The operation will be readily understood from the foregoing detailed description. The shafts D and E and the feed-rolls and C rotate continuously, as do also the olishing rolls B and B The cams D and 3 are normally loose on the shaft D; and periodically each cam is connected to rotate with the shaft 1), owing to the shifting of the corresponding clutch lever by. the appropriate tendency is for the cam-arm to rotate the cam in advance of the rotation of the shaft -D-,-'thereby relieving the friction upon the teeth of the clutch-members, thus permitting the spring to throw the clutch-member out of the operative position. V

osition under the action of the springc, t e cam- The rock-mem I her is then returned to its normal arm resting against the appropriateione. of

the stops a, a, and .the cam passing to its startin position with the high portion down, in w 1011 position the cam is ready for its turn in the next cycle of operations. A sheet is fed into the machine from the table, or guide, II when the shield O is in its lowermost position, as indicated in Fig. 5, in which position the shield protects the sheet metal from contactwith the rapidly rotating polishing cylinder until the. advance edge of the sheet metal is engaged between the feed roll C and the co-acting sheet-supporting roll C The cam D then passes from beneath the cam arm 0 of the rock-member C, permitting the spring a to restore the feedroll C and the sheet-supporting roll C? to their elevated positions and at the same time raise the shield (1 out ofthe way, thereby bringing the metal sheet into contact with the polishing roll. automatically through the machine, and as the advance portion of the sheet passes beneath the polishing rollB the advance margin of the sheet, left unpolished by the roller B, is polished by the roll 13. Before the metal sheet asses fromthe grip of the feedroll 0 and t e drum C the cam D acts to rock the member C and depress the feed roll C and'drum C thereby carrying the metal sheet out of contact with the polishing roll B, the shield C at the same time being interposed between the final margin of the meta sheet and the polishing roll, so as to obviate any danger of the sheet being struck by the polishing roll and thrown violently.

In our im roved machine, the feature of a polishing roll in combination with a pair of co-actin feed rolls (or feed-rolland drum), the polisiing roll and pair of feed-rolls being automatically shiftable with relation to each other, is regarded as of primary importance; and, also, the feature of an automatically shifted shield for protecting the metal sheet from the .polishing cylinder is regarded as of great importance. The organization of parts shown and described is such as to provide a compact arrangement and a construction admlrably adapted to its purpose. The foregoing detailed description, however, has been given for clearness of understanding only, and no undue limitation is to be understood therefrom.

What We regard as new, and desire to secure by Letters Patent, is:

1. Ina polishing machine of the character set forth, the combination-with the polishing cylinder, feed-rollers located adjacent thereto and driving power, of means actuated by the driving power for intermittently changing the adjustment of the rollers and. eylin-' der, one with relation to the other, for the purpose set forth.

' 2. In a olishing machine of the character set forth, t e combination with the polishing The sheet is then fed ing cylinder, sheet-sup orting roller located adjacent to said cylinr er and feeding-roller located adjacent to said sheet-supporting roller, said sheet-supporting roller and feed ing-roller cooperating to feed a sheet of metal, of means operatively connected with said driving power and intermittently actuated thereby to move both the sheet-supporting roller and feeding-roller as a unit toward and away from the polishing cylinder.

4. In a machine of the character set forth, the combination of a polishing roll, a sheetsupporting roll located adjacent thereto, a feed-roll located adjacent to said sheet-supporting roll, said sheet-supporting roll and feed-roll operative to feed a sheet of metal, means for automatically moving the sheetsupporting roll and feed-roll as a unit toward and away from the polishing roll, a shield interposed between the sheet-supporting roll,

the sheet-supporting roll and feed-roll are moved toward the polishing roll.

5. In a sheet metal polishing machine, the combination with the driving power of a pair of cooperating polishing cylinders arranged one in advance of the other, a sheet-supporting roller and a feed-roller located ad jaeent to each of said polishing cylinders and 0061)- erating to feed a sheet of metal, and means operatively connected with said driving power and intermittently actuated thereby for changing alternately the relative adjustment of said rollers at their adjacent polishing cylinders, for the purpose set forth.

6. In a machine of the character set forth, the combination of a polishing roll, a rockmember, sheet-supporting and feeding rolls journaled in said rock-member and located adjacent to the polishing roll, and means for intermittently actuating said rock-membmr.

7. In a sheet metal polishing machine, the combination with the driving power, of a pair .of cooperating polishing cylinders arranged one in advance of the other, a pair of rollers, constituting a sheet-supporting roller and a feed-roller, located adjacent to each of said polishing cylinders operating between them to feeda sheet of metal and movable as a unit toward and away from the respective polishing cylinder, a shield located adjacent to each polishing cylinder and movable into and out of operative position, and means actuated by said driving power for moving said shields. and changing the rellaa tive adjustment between the rollers and cylinders at the respective polishing cylinders alternately, for the purpose set forth. v

8. In a machine of the character set forth,

between the axes of said polishing rolls,

sheet-supporting and feeding rolls journaled in'said rock-members, a cam-shaft, and cams on said shaft adapted to actuate said rockmembers.

- 10. In a sheet metal polishing machine, the combination with the driving power, of a frame, a pair of cooperating polishing cylinders arranged one in advance of the other, a pair of members movably supported on said frame, and located beneath and between the axes of said polishing rollers, a sheet-supporting roller and a feeding-roller j ournaled on each of said movable members, a cam-shaft, cams on said shaft, and means operatively connected with said driving power for actuating said movable members.

11. In a machine of the character set forth, the combination with a pair of polish ing cylinders, of a pair of rock-members lo-- cated beneath and between the axes of said polishing cylinders, a sheet-su porting roller and a feeding-roller journale 1n each rockmember, a cam-shaft, cams loosely mounted thereon and adapted to engage said rockmembers, clutch-members adapted to couple said cams to rotate with the cam-shaft, and a rotary shaftequipped with means for intermittently actuatmg said clutch-members.

12. In a sheet metal'polishing machine,

, the combination with the driving power, of a pair of cooperating polishing c linders, a pair of pivotall'y su ported shie ds located adjacent to the polis g cylinders and movable intoand out of operative position, a pair of rock-members actuated by the driving power and operatively connected with said shields to move the same, a sheet-supporting roller and a feed-roller journaled in each of said rock-members all constructed and arranged to operate substantially as setforth.

13. In a machine of the character set forth, the combination with-a air of olishing cylinders, of a air of roe -me m ers, a sheet-supporting ro er and a feeding-roller journaled in each rock-member, means yieldingly holding the rock-members in position to maintain the metal sheet in contact with the polishing cylinder, and cams serving to operate said rock-members,- thereby to remove the sheet metal from contact with the polishing cylinders.

14. Ina machine of the character set forth, the combination with a pair of polishmg cylindersarranged one in advance of the other, and driving o'wer therefor, a pair of movable rock-mem ers located beneath said polishing cylinders, a sheet-supporting roller iou-rnaled 111' each of said rock-members and coated beneath a polishing cylinder, a small feed-roller journaled in each movable rockmember above and between the axes ofthe sheet-supporting rollers, and means operative wit said driving power for automatically moving said rock-members.

15. In a machine of the character set forth, the combination with a stationary frame, and driving power, of a pair of polishing cylinders j ournaled in said frame, an adjustable inner frame, movable rock-members supported on said inner frame, a sheet-supporting roller and a feeding-roller journaled on each of said rock-members, and means operatively connected with said driving power for actuating said rock-members, for the purpose set forth.

- 16. In a polishing machine of the character set forth, the combination of a main frame, a pair of polishing cylinders journaled thereon, and driving power therefor, of'an adjustable inner frame, shiftable shcet-su porting rollers and feeding rollers movab y mounted on said inner frame, a air of shields, and means operative with sald driving power for automatically and simultaneously shifting said rollers and shields.

17. In a olishing machine of the character set fort the combination of a main frame, a pair of polishing cylinders journaled thereon, and drlving power therefor, of an inner frame, vertical guides connecting the inner frame with'themain frame, a pair of rollers comprising a sheet-su porting roller and a feeding-roller located a jacent to each of said polishing cylinders and movably mounted on the inner frame, and means mounted on the inner frame and operative with said driving power for automatically moving each of said pairof rollers, for the purpose set forth.

18. In a machine of the character set forth, the combination with a mam frame and a pair of polishing cylinders journaled thereon, of an inner frame, a pair of rocksheet-su porting roller and a feed-roller mounts on each of said rock-members adjacent to each of said cylinders, gears connecting'said cam-shaft with said feed rollers, a pair of clutch-members mounted on said shaft, an adjacent shaft journaled in said inner frame and equipped with clutch-shifting members, and gears connecting said cam- 'members mounted on the inner frame, a cam-shaft 1ournaled on the mner frame, a

shaft with said second-namedshaft, for the purpose set forth.

19. In a machine of the character set forth, the combination of a main frame, a 5 pair of polishing rolls journaled thereon, an

Inner frame, a pair of rock-members mounted on said inner frame, a pair of sheet-supporting and feeding rolls mounted on each of said rock-members, a s ring connecting 10 said rock-members and ten ing to throw the sheet-supporting rolls into engagement with the polishing rolls, and cams for actuating saidrock-members, thereby to depress the sheet-supporting rolls with relation to the polishing rolls.

WALTER H. MAZE. JOHN NELSON. In presence of- L. HEISLAR, R. SOHAEFER. 

